CVE-2026-121528

HIGHCVSS 8.10% EPSS

A improper certificate validation vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2.0 through 7.2.13, FortiOS 7.0 all versions, FortiOS 6.4 all versions may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the SSLVPN web portal and the backend destination website.

Published 2026-11-11 · last modified 2026-11-14

Affected products

VendorProduct
fortinetfortios

Full record at NVD ↗

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Ncerio by BeyondNets · data from NVD, CISA KEV, EPSS.